由于目标被视为被动,无法在被动事件侦听器中阻止默认值?为啥滚动时出现此错误?

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【中文标题】由于目标被视为被动,无法在被动事件侦听器中阻止默认值?为啥滚动时出现此错误?【英文标题】:Unable to preventDefault inside passive event listener due to target being treated as passive? Why this error upon scrolling?由于目标被视为被动,无法在被动事件侦听器中阻止默认值?为什么滚动时出现此错误? 【发布时间】:2019-08-28 02:48:59 【问题描述】:

我正在使用 chrome 最新版本。我的应用程序抛出错误:

Unable to preventDefault inside passive event listener due to target being treated as passive. See https://www.chromestatus.com/features/6662647093133312

它阻碍了它正确滚动的能力,即生涩的滚动。我在互联网上尝试了很多解决方案,但无法解决。

请帮助我。我正在使用 css3、引导程序和 html。我尝试添加被动属性等,但似乎没有任何效果。

我的代码:

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                                <option class="EngineeringServices" value="s-CDFDECS">Conceptual Design, FEED, Detailed Design and Engineering Consultancy Services</option>
                                <option class="EngineeringServices" value="s-OMP">Operating Manuals & Procedures</option>
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    $(document).ready(function () 

        $("#divDescription").hide();
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            sessionStorage.setItem("firstVisit", true);

            setTimeout(function () 
                $("#cookieConsent").fadeIn(200);
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        else 
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            $('#divDescription').hide();
        

        //Software Services

        if (ValueSelected == "m-None") 

            $("#SubServices").val("s-None");
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            return;
        

        if (ValueSelected == "s-None") 

            $('#divDescription').hide();

            return;
        

        if (ValueSelected == "m-SS") 

            $("#SubServices").show();
            var drpSubServices = $('#SubServices');

            drpSubServices.children('option[class=SoftwareServices]').show();

            drpSubServices.children('option[class=HSE]').hide();

            drpSubServices.children('option[class=AIMS]').hide();

            drpSubServices.children('option[class=EngineeringServices]').hide();

            return;

        

        //AIMS
        if (ValueSelected == "m-AIMS") 

            $("#SubServices").show();

            var drpSubServices = $('#SubServices');

            drpSubServices.children('option[class=SoftwareServices]').hide();

            drpSubServices.children('option[class=HSE]').hide();

            drpSubServices.children('option[class=AIMS]').show();

            drpSubServices.children('option[class=EngineeringServices]').hide();

            return;

        

        //HSE
        if (ValueSelected == "m-HSE") 

            $("#SubServices").show();

            var drpSubServices = $('#SubServices');

            drpSubServices.children('option[class=SoftwareServices]').hide();

            drpSubServices.children('option[class=HSE]').show();

            drpSubServices.children('option[class=AIMS]').hide();

            drpSubServices.children('option[class=EngineeringServices]').hide();

            return;

        

        //Engineering Services
        if (ValueSelected == "m-ES") 

            $("#SubServices").show();

            var drpSubServices = $('#SubServices');

            drpSubServices.children('option[class=SoftwareServices]').hide();

            drpSubServices.children('option[class=HSE]').hide();

            drpSubServices.children('option[class=AIMS]').hide();

            drpSubServices.children('option[class=EngineeringServices]').show();

            return;

        
    );

    $("#SubServices").change(function () 
        var OptionSelected = $(this).find("option:selected");
        var ValueSelected = OptionSelected.val();
        if (ValueSelected == "Other") 

            $('#divDescription').show();

        
        else 

            $('#divDescription').hide();
        
    );

    $("#btnSubmit").click(function () 

        var name = $("#name").val();
        var email = $("#email").val();
        var mobileno = $("#mobileno").val();
        var MainServiceName = $("#MainServices").find(":selected").text();
        var SubServiceName = $("#SubServices").find(":selected").text();
        var Description = $("#Description").val();


        var EnquiryForm = 
            'name': name,
            'email': email,
            'mobileno': mobileno,
            'MainServiceName': MainServiceName,
            'SubServiceName': SubServiceName,
            'Description': Description
        
        //alert(EnquiryFormViewModel.name);
        @*$.post("/Home/EnquiryForm", EnquiryForm, function(returnedData) 
            //alert(returnedData.data);

            window.location.href= '@Url.Action("Thankyou", "Others", new message= "Thank you for contacting us. We'll get back to you soon." )';

        );*@



    );

</script>

【问题讨论】:

What are passive event listeners?的可能重复 使用被动侦听器意味着您承诺不致电preventDefault。如果您希望能够做到这一点,请不要使用被动侦听器。 @CertainPerformance:我该如何阻止它? 我看过帖子但不知道在哪里使用该代码 Chrome 已将被动事件侦听器设置为默认值(忽略标准),因此无法再绕过它,CertainPerformance。 【参考方案1】:

我知道它有点旧了。但我找到了解决我可能遇到的问题的方法。

问题是;车轮事件需要是被动的还是非被动的。现代浏览器(例如 chrome)因为它的被动=真而受到威胁。所以异常上升了。

查找添加轮事件侦听器,例如“window.addEventListener('wheel', func)”或“window.addEventListener('wheel', func, true|false)”并将其更改为“window.addEventListener('wheel', func, passive:false)”。

我的问题就这样解决了。

【讨论】:

这个答案很棒!如果有这样的文档参考就完美了:developer.mozilla.org/en-US/docs/Web/API/EventTarget/…【参考方案2】:

如果您的代码像使用我在 wordpress 中安装的名为 advanced-scrollbar/js/jquery.nicescroll.min.js 的插件一样被缩小,那么您应该像上面提到的 FerhatOzkanun 一样在源代码中查找细节并相应地更新它,清除缓存并重新运行,然后再次检查。对我来说,这个解决方案有效..

你可以先找这样的东西:

/*comment this ->return*/b.preventDefault(); /*add this*/passive:false

并查找此实例并替换它。

/*comment this ->e||!1*/ /*add this*/passive:false

指的是前面提到的window.addEventListener('wheel', func, true|false)。

【讨论】:

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